Relationship between quadriceps Echo Intensity, Muscle Thickness and pain intensity in aged women with knee Osteoarthritis

In OA patients as well as in aging, the decrement in strength is greater than would be expected for reduction in size of the muscle (Slemenda et al. 1998). This suggests that alterations in the intrinsic characteristics of muscle, reflecting a diminished muscle quality, may also contribute to impaired muscle function of the elderly and of those with knee OA (Conroy et al. 2012).